Low Profile (6-Day Power Supply)
Switching Regulated Power Supplies (to 720 watts)
Power Factor Correction and Universal Input

single output


Input Voltage: 90-265 VAC, 49-420 Hz, single phase, or 110-350 Vdc.
208 VAC 3-phase is also available (see Options).
AC input (maximum): 8A (WL7 case), 12A (WL9 case)
DC input (maximum): 5.75A (WL7 case), 8.8A (WL9 case).
DC input may be connected without regard to polarity.

Inrush current: Cold start, (thermistor limiter) 33A peak @115 VAC (typical); 65A peak @ 230 VAC (typical). (Not recommended for use on ground fault protected circuits.)

Startup Time: 800 mS (typical).

Input Undervoltage: An input of less than 90 VAC will not damage power supply.

Power Factor:0.99 (typical) at 115 VAC, 60 Hz and full load. Complies with EN61000-3-2.

Regulation (in constant voltage mode):
Line Regulation: ±0.05% or 5 mV, whichever is greater.
Load Regulation: ±0.05% or 5 mV, whichever is greater.

Regulation, Ripple (in constant current mode):
Line Regulation: ±0.2% or 30 mA.
Load Regulation: ±0.5% or 100 mA.
Current Ripple: 0.5% rms.

Regulation, Ripple (in ‘N+1’ or ‘P’ mode):
Line Regulation: ±0.1% or 50 mV, whichever is greater.
Load Regulation: ±0.1% or 50 mV, whichever is greater.
Ripple: 2x rating in table.

Ambient Operating Temperature: 0 to +71°C.

Temperature Coefficient (after 30 minute warm-up):
Voltage mode: ±0.02%/°C (typical).
Current mode: ±0.1%/°C (typical).

Drift (voltage mode or current mode): ±0.1% (typical) over 8 hours, after 30 minute warmup.

Storage Temperature: –40 to +85°C.

Holdup Time: 20 mS minimum with full load.

Transient Response: 300 µS to return to ±1% of output setting. Maximum of ±3% output excursion following a load step change from 50% to 100%.

Efficiency: See Output Specs. (typical, at 115 VAC, with full load.)

Polarity: Output is floating and may be used in either polarity.

Remote Sensing: Compensates up to 0.5 volt drop per output line (or within the limits of the output voltage adjustment range).

Output Adjustment: Voltage and current output adjustments are located on the front. Output adjustment may also be controlled by using remotely located potentiometers.

Voltage Monitor Terminal: Permits remote monitoring of output voltage, stepped down by a ratio of 10:1 (for 3.3v to 90v models) or 100:1 (for 100v to 135v models). Accuracy is 0.5% of maximum rated output voltage.

Current Monitor Terminal: For models with greater than 10 amps output current: permits remote monitoring of output current, stepped down by a ratio of 100 mV/Amp (accuracy is 3% of maximum rated output current). For models with less than 10 amps output current: permits remote monitoring of output current, stepped down by a ratio of 1000 mV/Amp (accuracy is 3% of maximum rated output current).

Overload/Short Circuit Protection: A short or overload forces the power supply into constant current mode, with automatic recovery.

Overvoltage Protection: Latches power supply OFF, reset by momentarily removing AC input power. (Models with ‘N’ option reset automatically.)

Thermal Protection: Thermostat(s), self-resetting.

Internal Failure Protection: Provided by internal fuse.

Output Inhibit: Applying between +3 and +15 Vdc to the Inhibit terminal will disable the supply. ‘Output Enable’ is also available (see Options).

V ok: When the power supply’s output voltage is between -14% and +15% of the nominal output voltage, ‘V ok’ will be between +3 and +5 Vdc (high). When the output voltage is outside the -14%, +15% window, the 'V ok' voltage will go low (approx 0.5 Vdc). 'V ok' can source 1 mA or sink up to 5 mA.

Output Indicator (DC on): Green LED.

Switching Frequency: 110 kHz (typical).

EMI: Designed to meet FCC Part 15 and EN55022, Class A.

Dielectric Withstand Voltage       Isolation
Input to output:     4242 Vdc      300 Vdc 
Input to case:       2121 Vdc      300 Vdc 
Output to case:       750 Vdc      300 Vdc 

Cooling: Forced-air cooled; air enters rear of power supply and exits from front cover. High Speed Fan noise rated at 48dB for 450w models and 54dB for 720w models.

Size and Weight:

Case   | Rough               |  Number of fans    |  Approx. 
Size   | Dimensions (inches) |  on rear panel     |  Weight 
WL7        1.7 x 6.4 x 9.4              2             3 lb. 5 oz.
WL9        1.7 x 6.4 x 11.9             2             4 lb. 13 oz.

See Drawing for exact dimensions.

Mounting: Threaded mounting holes permit mounting to a chassis, cabinet wall or bracket. To mount from the power supply side of the mounting surface or for DIN rail mounting, use accessory Mounting Kits.

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